Question

What is the name of the product of the reaction? (please explain, show work)
a. 1,1-dibromo-5-methylhexane
b. 1,2-dibromo-5-methylhexane
c. 1,2-dibromo-5-methyl-1-hexene
d. 2,2-dibromo-5-methylhexane
e. 1,1,2,2-tetrabromo-5-methylhexane

2 equivalents F it HBr is

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Answer #1

Answer:-

"Option d): 2,2-dibromo-5-methylhexane " is correct answer.

Terminal alkynes add two molecules of HBr to form a dibromoalkane. The addition occurs according to markovnikov's rule.

Mechanism:-

2° Vinglic Carbocation Br 2-bromo-5-methylhexene 2,2-dibromo-5methyl- hexane (Product) Br Br

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